Auditory filter shapes in the budgerigar (Melopsittacus undulatus) derived from notched‐noise maskers
| Autor: | Robert J. Dooling, Jian‐Yu Lin, Michael L. Dent |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Masking (art)
Physics Acoustics and Ultrasonics biology Acoustics Filter (signal processing) Noise Critical band medicine.anatomical_structure Arts and Humanities (miscellaneous) Budgerigar biology.animal Modulation (music) otorhinolaryngologic diseases medicine Auditory system Operant conditioning sense organs |
| Zdroj: | The Journal of the Acoustical Society of America. 101:3124-3124 |
| ISSN: | 0001-4966 |
| DOI: | 10.1121/1.418978 |
| Popis: | Estimates of the filter bandwidths in the avian auditory system have traditionally come from either single‐unit tuning curves or psychophysical masking studies using broad (critical ratio) or narrow (critical band) noises—procedures that are known to have certain limitations. The experiment reported here used the notched‐noise method for determining the size and shape of the auditory filter at 2.86 kHz—the center of the budgerigar’s range of hearing. Three budgerigars were trained by operant conditioning to detect a pure tone in a background of continuous noise and tested daily until thresholds stabilized. Masked thresholds were then obtained for noises of eleven different notch widths (five symmetric, six asymmetric) surrounding 2.86 kHz. Relative equivalent rectangular bandwidths were evaluated using several procedures and these bandwidths were compared to other estimates of filter bandwidths in the budgerigar auditory system from critical ratios, directly measured critical bands, critical modulation fr... |
| Databáze: | OpenAIRE |
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